Improvement in steam-generators



3 shets shget 2. A. L. BOGART.

Steam-Generators. No.l58,0l9. Patented Dec. 22,1874.

UNITED STATES PATENT OFFICE.

ADRIAN L. BOGART, OF NEW YORK, N. Y., ASSIGNOB OF ONE-HALF HIS RIGHTTO EUGENE E. BOGART, OF SAME PLACE.

IMPROVEMENT lN STEAM- GENERATORS.

Specification forming part of Letters Patent No. 158,019, dated Dtcember 22, 1874; application filed November 11, 1874.

To all whom it may concern:

Be it known that I, ADRIAN L. BOGART, of New York city, in the county of New York and in the State of New York, have invented certain new and useful Improvements in Steam- Generators; and do hereby declare that the following is a full, clear, and exact description thereof, reference being bad to the accompanyin g drawings making a part of this specification, in whicli- Figure 1 is a side elevation of my improved generator as connected with a horizontal boiler. Fig. 2 is a vertical central section of the same upon a line passing through the axis of the boiler, and Fig. 3 is a like view of said generator as applied to a vertical boiler.

Letters of like name and kind refer to like parts in each of the figures.

My invention is intended for use more especially with engines employed for operating sewing-machines, Watchmakers lathes, 850., and is designed to enable steam to be generated with ease, economy and despatch, and rendered available for operating an engine soon after heat is applied and before the water within the boiler or reservoir has become heated; towhich end it consists, principally, in the means employed for connecting the steamgenerator with the boiler or water-reservoir, whereby water is automatically supplied to said generator in just the necessary quantity to insure the greatest production of steam from a given quantity of water, substantially as is hereinafter specified. It consists, further, in the apparatus as a whole. its several parts being constructed and combined to operate in the manner and for the purpose substantially as hereinafter set forth.

In the annexed drawings, A represents my steamgenerator, constructed, preferably, in two sections, and in the form shown, and providcd, at its lower side, with a number of dependent water-legs, a a, &c., which are closed at their lower ends, and at their upper open ends communicate with the interior of said generator. The device shown is placed below a water-reservoir, B, preferably horizontal, and connected therewith by means of a pipe, 0, which extends from above the water-line of the latter downward to within a short dis tance of the bottom of said generator, and is open at each. end. A second pipe, D, extends from a point slightly below the lower end of the pipe 0, upward through the top of the generator A, thence laterally outward, and again upward, and is connected to or with the reservoir B at its end, near its bottom. The lower end of the pipe Dis open, while between the generator and boiler is placed a cook or valve, (1, by means of which communication is partially or entirely closed, as desired. A third pipe, E, extending laterally outward from the upper side of the generator A, for the purpose of supplying steam to an engine a gasburner, F, or other suitable means, for supplying heat to said generator; two gage-cocks, G and G, attached to the reservoir B, for use in determining the quantity of water therein; and a safety-valve, H, attached to said boiler at any suitable point, complete the apparatus, which is inclosed within a suitable casing, I, and operates as follows: 1

The reservoir is filled with water to the upper gage-cock, the fire is lighted beneath the generator, and after about twenty seconds the valve or cook dis partially opened. The water, passing downward through the supplypipe, will flash into steam as it strikes upon the heated surface of the lower part of the generator, and after the usual pressure is obtained the valve 01 is fully opened, and the apparatus permitted to work automatically.

It will be found that the lower side of the generator will soon become sufficiently cooled to cause water to remain therein, and that the upper line of such water will be maintained just below the lower end of the pipe G, as the rising of said water above such line will cause said pipe to be closed, when the pressure of steam will force such surplus water upward into the reservoir. For a short time after the apparatus is put into operation the level of the water within the generator may alternately rise and fall, as described, but an equilibrium will soon be restored, and the supply passing through the pipe D just equal the consiunption.

Sufficient steam for the engine will pass outward through the pipe E, but a portion of that generated will pass upward through the pipe C, and, becoming condensed, will impart its heat to the water within the reservoir, until the same has acquired an equal temperature, after which much less heat will be required than at first, as said reservoir will then be filled with steam above its water-line.

All heat from the burners which is not absorbed by the generator passes upward to and assists in heating the contents of the reservoir, and, further, coming in contact with the water and steam supply pipes, heats the contents of the former, and superheats the contents of the latter, great economy of fuel being thus secured.

When applied to a vertical boiler, the latter may be provided with flues B and B, through which the heated escaping products of combustion can pass, by which means a much larger heating-surface will be obtained than wouid be practicable if heat were applied to the exterior only of said boiler.

The advantages obtained by this apparatus are, first, the engine can be started and i'ully supplied with steam as soon as the generator can be heated-usually from twenty to thirty seconds; second, the construction of the generator, and the means of applying heat to the same and to the other portions of the apparatus, insure great economy; third, the apparatus is entirely safe, the small size of the generator and reservoir enabling them to be constructed, at small expense, with sufficient strength to withstand any probable degree of pressure.

Having thus fully set forth the nature and merits of my invention, what I claim as new 1. The means employed for connecting the generatorA and reservoir B, consisting of the pipe 0, extending from the upper water-line of said reservoir downward, nearly to the wa ter-line of said generator, and the pipe D, hav ing its lower end just below the water-line of said generator, and its upper end in communication with the lower side of said reservoir, said parts being combined to operate in the manner and for the purpose specified.

2. The combination of the steam-generator A, a, and a, the reservoir B, the connectingpipe 0, the supply-pipe D cl, the steam-pipe E, and the casing I, said parts being constructed and arranged to operate in the manner and for the purpose substantially as shown.

In testimony that I claim the foregoing I have hereunto set my hand this 9th day of November, 1874.

ADRIAN L. BOGART. Witnesses:

E. E. BOGART, N. 1. SMITH; 

